I want to know is it normal to burp a lot before throwing up?

Yes, it can be normal to burp frequently before vomiting. Burping may occur as the body tries to relieve pressure or discomfort in the stomach, which can be a precursor to nausea and vomiting. However, if you experience excessive burping along with other concerning symptoms, it's advisable to consult a healthcare professional to rule out any underlying issues.